Coordination chemistry of manganese

Coordination chemistry of manganese and porphyrins. M. Calvin, Rev. Pure Appl. Chem., 1965,15, 1-10 (9). 

Due to circumstances beyond the control of the Editors it has not been possible to complete a truly comprehensive account of the coordination chemistry of manganese. Nevertheless, what follows provides complete coverage of oxidation states Mii, Mn, and Mn , and... 

Gas-Phase Coordination Chemistry of Manganese(lll)-Salen Complexes... 

The story of the coordination chemistry of manganese is very incomplete it is only at an early stage of development compared with most of the other transition metals and there is an obvious need for X-ray structural techniques to be used much more routinely in those studies of manganese chemistry that rely on the isolation and characterization of solid compounds for their purpose. 

The coordination chemistry of (phenoxyl)manganese complexes is rather more complicated because both metal- and ligand-centered electron-transfer processes are accessible in the normal potential range. The phenolato precursors are known to exist with manganesc(II), (III), and even (IV). In fact, three phenolato groups strongly stabilize the Mn(IV) oxidation state. 

The coordination chemistry of oxalate (ox, C2042-) compounds provides a series of very interesting compounds from the stereochemical and magnetic points of view [197]. Most frequently the compounds form honeycomb layers in the presence of transition metal ions, in which the stereochemistry of the metal ion coordination sphere alternates between A and A. However, a three-dimensional homochiral structure is also possible. On the other hand, the negative charge of the oxalates necessitates the incorporation of cations between them, which provides the opportunity to introduce chirality and additional functionality in materials. The compound formed between homochiral manganese II oxalate and iron II tris bipyridinc (bpy) with formula [Mn oxls]2 " [Fcn(bpy)3]2+ crystallises in the space group fJ4 32. 

It is perhaps first appropriate to consider how the coordination chemistry of lesser unsaturated derivatives evolved. In pioneering work by Coffield and his coworkers, it was demonstrated that reaction of acetylene with manganese pentacarbon-yl or methylmanganese tetracarbonyl under autoclave conditions led to production of the complex 174 (Scheme 28).248) The cyclopentadienyl unit in 174 is of course... 

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